[llvm] 3071536 - [test] precommit new test for D117503

[Philip Reames via llvm-commits]

Author: Philip Reames
Date: 2022-01-17T15:00:18-08:00
New Revision: 30715365d45c02669d7dc947ecf2a5e9321f26d0

URL: https://github.com/llvm/llvm-project/commit/30715365d45c02669d7dc947ecf2a5e9321f26d0
DIFF: https://github.com/llvm/llvm-project/commit/30715365d45c02669d7dc947ecf2a5e9321f26d0.diff

LOG: [test] precommit new test for D117503

Added: 
    llvm/test/Transforms/GlobalOpt/calloc-promote.ll

Modified: 
    

Removed: 
    


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diff  --git a/llvm/test/Transforms/GlobalOpt/calloc-promote.ll b/llvm/test/Transforms/GlobalOpt/calloc-promote.ll
new file mode 100644
index 0000000000000..747b7f26f7898
--- /dev/null
+++ b/llvm/test/Transforms/GlobalOpt/calloc-promote.ll
@@ -0,0 +1,55 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -passes=globalopt -S < %s | FileCheck %s
+
+ at g = internal global i32* null, align 8
+
+define signext i32 @f() local_unnamed_addr {
+; CHECK-LABEL: @f(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[CALL:%.*]] = call i8* @calloc(i64 1, i64 4)
+; CHECK-NEXT:    [[B:%.*]] = bitcast i8* [[CALL]] to i32*
+; CHECK-NEXT:    store i32* [[B]], i32** @g, align 8
+; CHECK-NEXT:    [[B2:%.*]] = bitcast i8* [[CALL]] to i16*
+; CHECK-NEXT:    store i16 -1, i16* [[B2]], align 2
+; CHECK-NEXT:    ret i32 0
+;
+entry:
+  %call = call i8* @calloc(i64 1, i64 4)
+  %b = bitcast i8* %call to i32*
+  store i32* %b, i32** @g, align 8
+  %b2 = bitcast i8* %call to i16*
+  store i16 -1, i16* %b2
+  ret i32 0
+}
+
+define signext i32 @main() {
+; CHECK-LABEL: @main(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[CALL:%.*]] = call signext i32 @f()
+; CHECK-NEXT:    call void @f1()
+; CHECK-NEXT:    [[V0:%.*]] = load i32*, i32** @g, align 8
+; CHECK-NEXT:    store i32 1, i32* [[V0]], align 4
+; CHECK-NEXT:    call void @f1()
+; CHECK-NEXT:    [[V1:%.*]] = load i8*, i8** bitcast (i32** @g to i8**), align 8
+; CHECK-NEXT:    store i8 2, i8* [[V1]], align 4
+; CHECK-NEXT:    call void @f1()
+; CHECK-NEXT:    [[V2:%.*]] = load i32*, i32** @g, align 8
+; CHECK-NEXT:    [[RES:%.*]] = load i32, i32* [[V2]], align 4
+; CHECK-NEXT:    ret i32 [[RES]]
+;
+entry:
+  %call = call signext i32 @f()
+  call void @f1()
+  %v0 = load i32*, i32** @g, align 8
+  store i32 1, i32* %v0, align 4
+  call void @f1()
+  %v1 = load i8*, i8** bitcast (i32** @g to i8**), align 8
+  store i8 2, i8* %v1, align 4
+  call void @f1()
+  %v2 = load i32*, i32** @g, align 8
+  %res = load i32, i32* %v2, align 4
+  ret i32 %res
+}
+
+declare noalias align 16 i8* @calloc(i64, i64)
+declare void @f1()